function createReduce(dir) { // Optimized iterator function as using arguments.length // in the main function will deoptimize the, see #1991. function iterator(obj, iteratee, memo, keys, index, length) { for (; index >= 0 && index < length; index += dir) { var currentKey = keys ...
把function包装进wrapper方法,function作为第一个参数。允许wrapper在function运行前后执行代码,并且有条件的执行。 var hello = function(name) { return "hello: " + name; }; hello = _.wrap(hello, function(func) { return "before, " + func("moe") + ", after"; }); hello(); => 'before, h...
var property = function(key) { 520 return function(obj) { 521 return obj == null ? void 0 : obj[key]; 522 }; 523 }; 524 */ 525 // _.pluck(list, propertyName) 526 _.pluck = function(obj, key) { 527 return ...
var hello = function(name) { return "hello: " + name; }; hello = _.wrap(hello, function(func) { return "before, " + func("moe") + ", after"; }); hello(); => 'before, hello: moe, after' negate_.negate(predicate) 返回一个新的predicate函数的否定版本。
test-treeshake test .eslintrc .gitignore .travis.yml CNAME CODE_OF_CONDUCT.md CONTRIBUTING.md LICENSE README.md SECURITY.md bower.json favicon.ico index.html karma.conf-sauce.js karma.conf.js package-lock.json package.json rollup.common.js ...
_.defer(function(){ alert('deferred'); }); // Returns from the function before the alert runs. throttle_.throttle(function, wait, [options]) Creates and returns a new, throttled version of the passed function, that, when invoked repeatedly, will only actually call the original function at...
A port of the native Python range() function. See the Python documentation. _.range = function(start, stop, step) { if (stop == null) { stop = start || 0; start = 0; } if (!step) { step = stop < start ? -1 : 1; } var length = Math.max(Math.ceil((stop - start) ...
13 _.template(templateString, [settings]) Underscore.JS has methods to create a chain of methods and then retrive their effective result. This chapter discusses them in detail. Underscore.JS provides various utility methods as listed below − ...
_.debounce –Creates a debounced version of a function. _.once –Ensures a function is only called once. _.after –Returns a function that will only run after it has been called N times. _.before –Returns a function that will run until it has been called N times. _.wrap –Wraps ...
> I believe the fix would be for the "_" check to be after the import and > not before. > The only workaround you would have in the short term is not to use > an "index.py" file and always name it something different. > This is actually a security hole because any __auth__...